There arent many places to go in SA anymore.  There is Nagels Gun Shop where you may find something, but not likely.  Its been years since Ive been in there.  Durys Gun Shop used to carry the old stuff but they now, or used to, sell all older firearms and consignment firearms on auctionarms.com.  The closet place where you may find something is at the Cabelas in Buda and you can probably view most of what they have online.  The gun shows around here arent all that great either.  Last one I went to I saw about 8-10 tables with some sort of winchesters on them.  Its slim pickens.